Woven wire belt for paper-making machines



WOVEN WIRE BELT FOR PAPER MAKING MACHINES Filed Aug. 29, 1930 rI -1 v T I F1 m 15 4 17 E 77 I4 n fil 1% I 12 l I E I2 77 m 75 I2 if ,4 ,2 ;3

INVENTOR. NELEUN IALNLBB. 25 114W.

'- A TTORNEYS.

Patented Dec. 20, 1932 UNITED STATES Nansen w. WEBB, or nnrmvrnm, NEW JERSEY, assrenon r0 EASTWOOD wma coaroaa'rxon, or BELLEVIILE, NEW JERSEY, a coaroaa'rron or new mass:

WOVEN WIRE BELT FOB PAPER-MAKING M'AOEIN'ES Application filed august 29, 1930. semi No. 478,622.

The present invention relates towoven wire belts, particularly for paper-making machines of the Fourdrinier type, and has for on ob'ect to provide an improved seam which may e produced with facility, will be of great strength, and will closely approximate the structure of the body of the wire as to strength, flexibility, and porosity.

In Fourdrinier wires, the construction of various mesh wires is practically standardized, and in any given mesh there is less space between the warp wires, where the lac-.

ing wire must lie, than the diameter of the war wires, so that it has been the practice to emp 0y a lacing wire for the seam of smaller diameter than the warp wires to enable the operator producing the seam to thread it through the constricted mesh openings. The resultant seam, particularly if it is of the skip-seam type, where the lacing wire is passed through every other mesh opening, is therefore of much less strength than the body of the cloth andin use upon the paper machine-is apt to open up. It has also been the practice to employ needles to facilitate threading of the lacing wire through the con.- stricted mesh openings, and these would very often cut the warp ends and produce irregularities in the seam. i

It isaparticular object of the present invention to provide a seam structure in which the lacing wire may be of same or greater diameter than the warp wires, and to this end I propose to provide at the butted end of the wlres alternate mesh openin of greater width than the mesh openings t roughout the body of the wire, and which are adapted to have the lacing wire readily, threaded therethrough, without the use of needles, and with greater speed and uniformity than has here tofore obtained.

It is another object to provide a seam in which the lacing wire will be more nearly parallel to the warp wires at the wear side than is the case with the usual skip-seam, so

that it will not be subjected to excessive wear and cutting through contact with the edges of the grooves that are usually cut in the suction boxes by the wire knuckles. It is a further proposed to so arrange the warp wire ends as to tend to widen and smooth any grooves in the suction boxes.

PATENT QFFICE With the above and other objects in view an embodiment of the invention is shown in the acompanying drawing, and this embodiment will be hereinafter more fully described with reference thereto, and the invention will be finally ointed out in'the claims.

In the awing:

Fig. 1 is an enlar ed plan view of a portion of one side of the It at the Fig. 2 is a sectional view taken along the line 2-2 of Fig. 1, and

Fig. 3 is a plan view of the other side from that shown in Fig. 1-.

Similar reference characters indicate corresponding parts throughout the several figures of the drawing. 1

Referring to the drawing, Fig. 1 shows, greatly enlarged, a portion of the two ends of the wire cloth which are seamed together to form a belt,the senting a piece of size is about g of an inch long, there about warp wires to the inch. The wire cloth consists of warp wires 10 and weft ortion, as shown, repret which in its actual wires 11 of brass, bronze or other suitable material for. the purpose.

At each end of the cloth the warp wires disposedat one side of the end weft wine (the under side as shown in Fig. 1) are arranged in sli htly an being incline in one irection at one end and in the other direction at the other end, so that in the butted relation of the wire ends the angular bent warp ends are substantially, parallel. The alternate mesh openin 13 lar relation, as at 12,

adjacent the nd weft wires, due tothis arrangement of the warp wire ends, are wider than the normal mesh openings in the body of the cloth,-and are ada ted to have the'lacing wire threaded theret roughas w1ll hereinafter more fully a pear.

In order to secure y maintain this arrange .ment ofthe warp wire ends and at the same time provide a'firm anchor for the lacing wire the end weft wires are 'referably of the disclosed in my Patent 0. 1,7 47 ,27 2,.granted February 18, 1930, and which consists of a solder-coated wire 14 inserted between the warp wire ends in substitution of a removed weft Thesolder-ooated wire is joined to the warp wire ends by the application of heat, which causes the solder to flow to the warp wire ends to integrally join and truss them, and mesh openings between the wires being at the same time maintained uniformly free of lumpy spots, because of the capillary flow of the metal away from them.

The seam is now completed by sewing the lacin wire 15 about the two butted ends of the wire cloth, the same being passed through the relatively large alternately arranged mesh openings 13. The butted ends are preferably so disposed that the straight warp ends at the upper side of the, end weft wires,

as shown in Fig. 1, are in line with each other,

so that the lacing wire will be flat without having to pass over any knuckles.

The lacing wire, which may be of greater diameter than the normal mesh openings, may be sewed in with great facility and without the use of needles, so that a seam of great strength and uniformity is produced with a great saving in time and with the elimination to a great extent of defective seams. In use upon the paper machine the lacing wire is not subject to as great wear as has been the case heretofore, because of the greater alignment with the warp knuckles, and also the angularl disposed warp ends will tend to smooth t e corners of grooves cut in the suction boxes, so that the wire will move over the suction boxes more smoothly, and cutting of the groove edges across the lacing wires, which has heretofore resulted in excessive and rapid wear of the lacing wire, will be greatly reduced.

I have illustrated and described a pre ferred and satisfactory embodiment of the invention, but it will be obvious that changes may be made therein, within the spirit and scope. thereof, as defined in the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Pats entis: 1. In a wire cloth belt, a length of woven cloth comprising warp and weft wires and having its ends adjacent, the warp and weft wires being spaced toprovide mesh openings, certain mesh openings contiguous to the ends of the cloth being relatively wider than the other mesh openings disposed in transverse alignment therewith, said oer-- tain mesh openings being bounded by the end weft wire, the next adjacent weft wire, a warp wire end overlying said end weft wire, and a warp wire end underlying 'said end weft wire, said underlying warp wire end be' disposed in divergent relation to the over ying warp wire end, means fixedly securing said warp wire ends to said end weft wire whereby said relatively wider mesh openings are of predeterminedly fixed size for having a lacing wire passed there'- through, and a lacin wire connecting the ends of the cloth an passed only through said relatively wider mesh openings and overlying said end weft wires at points contiguous'ly opposed to said underlying warp wire ends. r

2.. In a wire cloth belt, a length of woven wire cloth comprising warp and weft wires and having its ends adjacent, the warp'and weft wires being spaced to provide mesh openings, certain of the warp wire ends being at one side of the end weft wires, and the other warp wire ends being at the other side of said end weft wires, all of said warpwire ends at one side being angularly bent sidewise in the same direction, whereby certain mesh openings contiguous to the ends of the cloth are relatively wider than the other ment therewith, said certain mesh openings being bounded by the end weft wire, the next adjacent weft wire, a warp wire end overlying said endv weft. wire, and a warp wire end underlying said end weft wire, means fixedly securing said warp wire ends to said end weft wire whereby said relatively wider mesh openings are of predeterminedly fixed size for having a lacing wire passed therethrough, and a lacing wire connecting the ends of the cloth and passed only through said relatively wider mesh openings and overlying said end weft wires at points contigausously opposed to underlying warp wire en tion, whereby the alternate mesh openings contiguous to the ends of the cloth are relatively wider than the other mesh openings disposed in transverse alignment therewith, said alternative relatively wider mesh openings being bounded by the end weft wire, the next adjacent weft wire, a warp wire end overlying said end weft wire, and a ,warp wire end underlying said end weft wire, means fixedly securing said warp wire ends to said end weft wire whereby said relatively wider mesh openings are of predeterminedly fixed size for having a lacing wire passed .therethrough, and a lacing wire connectingthe ends of the cloth and passed only through said relatively wider mesh openings and overlying said end weft wires at points contiguously oppowd to said underlying warp wire ends.

4. In a wire cloth belt, a length of woven wire cloth comprising warp and weft wires and having its ends adjacent, a replacement weft wire at each end engaged between the overlying and underlying warp wire ends in substitution of a removed and previously woven-in weft wire, the warp and weft wires being spaced to provide mesh openings, all of the warp wire ends at one side of said replacement weft strand being angularly vbent sidewise in the same direction, whereby certain jmesh openings contiguous to the ends ofthe cloth are relatively wider than the other mesh openings disposed in transverse alignment therewith, said certain mesh openings being bounded by said replacement end vweft wire, the next adjacent weft wire, a warp wire end overlying said end weft wire, and a warp wire end underlying said end weft wire, means permanently fixing said warp wire ends to said end weft wire whereby said mesh openings are of predeterminedly fixed size for having a lacing'wire passed therethrough, and a lacing wire connecting the ends of the cloth and passed only through said relatively wider mesh openings and overlying said end weft wires at points contiguous underlying warp wire ends.

5. In a wire cloth belt, a length of woven wire cloth comprising warp and weft wires and having its ends adjacent, the warp and weft wires being spaced to provide mesh openings, certain of the wa wire ends being at one side of the end we 7 wires, and the other warp wire ends being at the other side of said end weft wires, all of said warp wire ends at one side being angularly bent sidewise in the same direction, whereby certain mesh openings contiguous to the ends of the cloth are relatively wider than the other mesh openings disposed in transverse alignment therewith. said certain mesh openings being bounded by the end weft wire, the next adjacent weft wire, a warp wire end overl g said end weft wire, and a warp wire en underlying said end weft wire, said underlying warp wire end being disposed in divergent relation to the overlying 'wa wire end, means permanently sai warp wine ends to said end weft wire whereby said mesh openings are of predeterminedly fixed size for having a lacing wire passed therethrough,

and a laclng wire connecting the ends of the I cloth and passed only through said relatively wider meshopenings-and overlying said end weft wires at said underlying warp wire ends, the arly bent warp ends at the adjacent ends of the cloth being atthe under side of the belt and in parallel relation to each other, and the warp wires having said bent ends longitudinally aligned at each side'of the connected ends.

Signed at Belleville, county of Essex, and State of New Jersey, this 15th day of J anuary, 1930.

NELSON W. WEBB.

yopposed to points contiguously oppofl to I 

